> You can sell something, and buy at a discount, but only by selling something at the same discount.
Most people sell labor or knowledge for 20-50 years during their lives. Pretty much continuously. So during a recession you can spend some of the money you get from your labor on stocks that are "on sale".
Except that - as we (hopefully) learned with the last recession - you're significantly more likely to be outside the "most people" category in this case, because layoffs tend to happen when companies have less money.
Most people sell labor or knowledge for 20-50 years during their lives. Pretty much continuously. So during a recession you can spend some of the money you get from your labor on stocks that are "on sale".